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Finding the Fourth Proportional to 279,574.75, 419,371.85 and 92,581.39

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Solution

The fourth proportional to 279,574.75, 419,371.85 and 92,581.39 is: 138,875.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,574.75 : 419,371.85 = 92,581.39 : x
  2. Step 2: Convert to fraction form
    279,574.75/419,371.85 = 92,581.39/x
  3. Step 3: Cross multiply
    279,574.75x = 419,371.85 × 92,581.39
  4. Step 4: Simplify right side
    279,574.75x = 38,826,028,799.87
  5. Step 5: Solve for x
    x = 38,826,028,799.87/279,574.75
  6. Step 6: Final answer
    x = 138,875.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.